User:Xaosflux/sandbox109

Math

 * $$3$$ -> $$3$$
 * $$2$$ -> $$2$$
 * $$1$$ -> $$1$$
 * $$0$$ -> $$0$$
 * $$-1$$ -> $$-1$$

0

 * 0 -> 0
 * $$0$$ -> $$0$$